Enhancing geophysical signals from archaeological sites trough the use of wavelet transforms

Authors:
Guangrong Shen;Apostolos Sarris;Nikos Papadopoulos
Affiliations:
Lab. of Digital Agric., Sch. of Agric. & Biol., Shanghai Jiaotong Univ., Shanghai, PRC and Lab. of Geophysical - Satellite Rem. Snsg. & Archaeo-environment, Inst. for Medit. Studies, Fndtn. for Re ...;Laboratory of Geophysical - Satellite Remote Sensing & Archaeo-environment, Institute for Mediterranean Studies, Foundation for Research & Technology, Hellas (F.O.R.T.H.), Rethymno, Crete, Greece;Laboratory of Geophysical - Satellite Remote Sensing & Archaeo-environment, Institute for Mediterranean Studies, Foundation for Research & Technology, Hellas (F.O.R.T.H.), Rethymno, Crete, Greece
Venue:
WSEAS TRANSACTIONS on SYSTEMS
Year:
2008

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Abstract

Various levels and types of noise are responsible for hindering the valuable information obtained through shallow depth geophysical exploration of archaeological sites. Wavelet transform techniques were tested as a method for decomposition of the original geophysical data in order to eliminate the noise levels inherent to the geophysical measurements. Unsupervised classification techniques were employed for the final fusion of different datasets originating from various surveys or processing procedures. The resulting images were able to enhance the subsurface targets, eliminating the noise levels and exploiting fully the properties of the geophysical techniques used.